Thermal transformations in biotites depending on increasing postshock temperatures were studied.
A decrease of the unit cell volume, caused by oxidation of octahedral Fe2+ to Fe3+ at temperature rangings of about 400–500° C was observed.
In the same temperature range (∼500° C) the biotite lattice becomes thermodynamically unstable. Intersheet and octahedral layers are decomposed, whereas individual SiO4-tetrahedra are more resistant to thermal vibrations. The decomposition of the biotite leads to the formation of new minerals and amorphous phases. By X-ray analysesmagnetite, hercynite, pyroxene, feldspar, and quartz were identified.
Thermal transformations of biotite induced by shock waves are characterized by states of distinct disequilibrium.
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Bragg, W. L.: Atomic structure of minerals. New York: Cornell University Press 1937
Brown, G.: The X-ray identification and crystal structures of clay minerals. London: Mineralogical Society (Clay Minerals Group) 1961
Brügel, W.: Einführung in die Ultrarotspektroskopie. Darmstadt: Steinkopff 1969
Chao, E. T. C.: Pressure and temperature histories of impact metamorphosed rocks-based on petrographic observations. Proceed. of the Conf. on Shock Metamorphism of Natural Materials, Greenbelt, April 14–16 (1966). In: B. M. French and N. M. Short (eds.): Shock metamorphism of natural materials. Baltimore: Mono Book Corp. 1968
Deer, W. A., Howie, R. A., Zussman, J.: Rock-forming minerals. Vol. 3: Sheet silicates. London-Beccles: Longmans 1962
Engelhardt, W. von: Shock produced glasses from the Ries crater. Contr. Mineral. and Petrol.36, 265–292 (1972)
Engelhardt, W. von, Stöffler, D.: Stages of shock metamorphism in the crystalline rocks of the Ries basin (Germany). Proceed. of the Conf. on Shock Metamorphism of Natural Materials, Greenbelt, April 14–16 (1966). In: B. M. French and N. M. Short (eds.): Shock metamorphism of natural materials. Baltimore: Mono Book Corp. 1968
Engelhardt, W. von, Stöffler, D., Schneider, W.: Petrologische Untersuchungen im Ries. Geologica Bavarica61, 229–295 (1969)
Farmer, V. C.: Infrared spectroscopy in clay mineral studies. Clay Minerals7, 373–387 (1968)
Farmer, V. C., Russel, J. D.: Infrared absorption spectroscopy in clay studies. Clays and Clay Minerals27, 121–142 (1967)
Ishii, M., Nakahira, M., Takeda, H.: Far infrared absorption spectra of micas. Proceed. of the International Clay Conf., vol. 1. Jerusalem: Israel Universities Press 1969
Moenke, H.: Mineralspektren. Berlin: Akademie-Verlag 1962
Power, G.: Geology and petrology of Haiwee Ridge, Inyo County California. Ph. D. Thesis, The John-Hopkins-University, Baltimore, 1959
Schneider, H.: Shock induced mechanical deformations in biotites from crystalline rocks of the Ries-crater. Contr. Mineral. and Petrol.37, 75–85 (1972)
Steinfink, H.: Crystal structure of a trioctahedral mica, phlogopite. Am. Mineralogist47, 886–896 (1962)
Stöffler, D.: Progressive metamorphism and classification of shocked and brecciated crystalline rocks at impact craters. J. Geophys. Res.76, 5541–5551 (1971)
Stöffler, D.: Deformation and transformation of rock-forming minerals by natural and experimental shock processes. I. Behavior of minerals under shock compression. Fortschr. Mineral.49, 50–113 (1972)
Stubičan, V., Roy, R.: Isomorphous substitution and infrared spectra of the layer lattice silicates. Am. Mineralogist46, 32–51 (1961)
Turnock, H. C., Eugster, H. P.: Fe-Al-oxides: phase relationships below 1000° C. J. Petrol.3, 533–565 (1962)
Vedder, W.: Correlations between the infrared spectrum and chemical composition of mica. Am. Mineralogist49, 736–768 (1964)
Vedder, W.: Dehydroxylation and rehydroxylation, oxydation and reduction of micas. Am. Mineralogist54, 482–509 (1969)
Wones, D. R.: Physical properties of synthetic biotites on the join phlogopite-annite. Am. Mineralogist48, 1300–1321 (1963)
Wones, D. R., Eugster, H. P.: Stability of biotite: Experiment, theory and application. Am. Mineralogist50, 1228–1272 (1965)
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Schneider, H. Shock-induced thermal transformations of ries-biotites. Contr. Mineral. and Petrol. 43, 233–243 (1974). https://doi.org/10.1007/BF01134839
- Shock Wave
- Mineral Resource
- Cell Volume